bzerangue · June 28, 2023 04:29 · Feb 19, 2013 · Feb 19, 2013
diff --git a/json2xml.php b/json2xml.php
@@ -1,14 +1,18 @@
 <?php
 
+  // Require Array2XML class which takes a PHP array and changes it to XML
   require_once('array2xml.php');
 
+  // Gets JSON file
   $json = file_get_contents('file.json');
 
+  // Decodes JSON into a PHP array
   $php_array = json_decode($json, true);
 
   // adding Content Type
   header("Content-type: text/xml");
 
+  // Converts PHP Array to XML with the root element being 'root-element-here'
   $xml = Array2XML::createXML('root-element-here', $php_array);
 
   echo $xml->saveXML();
diff --git a/array2xml.php b/array2xml.php
@@ -0,0 +1,164 @@
+<?php
+/**
+ * Array2XML: A class to convert array in PHP to XML
+ * It also takes into account attributes names unlike SimpleXML in PHP
+ * It returns the XML in form of DOMDocument class for further manipulation.
+ * It throws exception if the tag name or attribute name has illegal chars.
+ *
+ * Author : Lalit Patel
+ * Website: http://www.lalit.org/lab/convert-php-array-to-xml-with-attributes
+ * License: Apache License 2.0
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ * Version: 0.1 (10 July 2011)
+ * Version: 0.2 (16 August 2011)
+ *          - replaced htmlentities() with htmlspecialchars() (Thanks to Liel Dulev)
+ *          - fixed a edge case where root node has a false/null/0 value. (Thanks to Liel Dulev)
+ * Version: 0.3 (22 August 2011)
+ *          - fixed tag sanitize regex which didn't allow tagnames with single character.
+ * Version: 0.4 (18 September 2011)
+ *          - Added support for CDATA section using @cdata instead of @value.
+ * Version: 0.5 (07 December 2011)
+ *          - Changed logic to check numeric array indices not starting from 0.
+ * Version: 0.6 (04 March 2012)
+ *          - Code now doesn't @cdata to be placed in an empty array
+ * Version: 0.7 (24 March 2012)
+ *          - Reverted to version 0.5
+ * Version: 0.8 (02 May 2012)
+ *          - Removed htmlspecialchars() before adding to text node or attributes.
+ *
+ * Usage:
+ *       $xml = Array2XML::createXML('root_node_name', $php_array);
+ *       echo $xml->saveXML();
+ */
+
+class Array2XML {
+
+    private static $xml = null;
+  private static $encoding = 'UTF-8';
+
+    /**
+     * Initialize the root XML node [optional]
+     * @param $version
+     * @param $encoding
+     * @param $format_output
+     */
+    public static function init($version = '1.0', $encoding = 'UTF-8', $format_output = true) {
+        self::$xml = new DomDocument($version, $encoding);
+        self::$xml->formatOutput = $format_output;
+		self::$encoding = $encoding;
+    }
+
+    /**
+     * Convert an Array to XML
+     * @param string $node_name - name of the root node to be converted
+     * @param array $arr - aray to be converterd
+     * @return DomDocument
+     */
+    public static function &createXML($node_name, $arr=array()) {
+        $xml = self::getXMLRoot();
+        $xml->appendChild(self::convert($node_name, $arr));
+
+        self::$xml = null;    // clear the xml node in the class for 2nd time use.
+        return $xml;
+    }
+
+    /**
+     * Convert an Array to XML
+     * @param string $node_name - name of the root node to be converted
+     * @param array $arr - aray to be converterd
+     * @return DOMNode
+     */
+    private static function &convert($node_name, $arr=array()) {
+
+        //print_arr($node_name);
+        $xml = self::getXMLRoot();
+        $node = $xml->createElement($node_name);
+
+        if(is_array($arr)){
+            // get the attributes first.;
+            if(isset($arr['@attributes'])) {
+                foreach($arr['@attributes'] as $key => $value) {
+                    if(!self::isValidTagName($key)) {
+                        throw new Exception('[Array2XML] Illegal character in attribute name. attribute: '.$key.' in node: '.$node_name);
+                    }
+                    $node->setAttribute($key, self::bool2str($value));
+                }
+                unset($arr['@attributes']); //remove the key from the array once done.
+            }
+
+            // check if it has a value stored in @value, if yes store the value and return
+            // else check if its directly stored as string
+            if(isset($arr['@value'])) {
+                $node->appendChild($xml->createTextNode(self::bool2str($arr['@value'])));
+                unset($arr['@value']);    //remove the key from the array once done.
+                //return from recursion, as a note with value cannot have child nodes.
+                return $node;
+            } else if(isset($arr['@cdata'])) {
+                $node->appendChild($xml->createCDATASection(self::bool2str($arr['@cdata'])));
+                unset($arr['@cdata']);    //remove the key from the array once done.
+                //return from recursion, as a note with cdata cannot have child nodes.
+                return $node;
+            }
+        }
+
+        //create subnodes using recursion
+        if(is_array($arr)){
+            // recurse to get the node for that key
+            foreach($arr as $key=>$value){
+                if(!self::isValidTagName($key)) {
+                    throw new Exception('[Array2XML] Illegal character in tag name. tag: '.$key.' in node: '.$node_name);
+                }
+                if(is_array($value) && is_numeric(key($value))) {
+                    // MORE THAN ONE NODE OF ITS KIND;
+                    // if the new array is numeric index, means it is array of nodes of the same kind
+                    // it should follow the parent key name
+                    foreach($value as $k=>$v){
+                        $node->appendChild(self::convert($key, $v));
+                    }
+                } else {
+                    // ONLY ONE NODE OF ITS KIND
+                    $node->appendChild(self::convert($key, $value));
+                }
+                unset($arr[$key]); //remove the key from the array once done.
+            }
+        }
+
+        // after we are done with all the keys in the array (if it is one)
+        // we check if it has any text value, if yes, append it.
+        if(!is_array($arr)) {
+            $node->appendChild($xml->createTextNode(self::bool2str($arr)));
+        }
+
+        return $node;
+    }
+
+    /*
+     * Get the root XML node, if there isn't one, create it.
+     */
+    private static function getXMLRoot(){
+        if(empty(self::$xml)) {
+            self::init();
+        }
+        return self::$xml;
+    }
+
+    /*
+     * Get string representation of boolean value
+     */
+    private static function bool2str($v){
+        //convert boolean to text value.
+        $v = $v === true ? 'true' : $v;
+        $v = $v === false ? 'false' : $v;
+        return $v;
+    }
+
+    /*
+     * Check if the tag name or attribute name contains illegal characters
+     * Ref: http://www.w3.org/TR/xml/#sec-common-syn
+     */
+    private static function isValidTagName($tag){
+        $pattern = '/^[a-z_]+[a-z0-9\:\-\.\_]*[^:]*$/i';
+        return preg_match($pattern, $tag, $matches) && $matches[0] == $tag;
+    }
+}
+?>
diff --git a/json2xml.php b/json2xml.php
@@ -0,0 +1,14 @@
+<?php
+
+  require_once('array2xml.php');
+
+  $json = file_get_contents('file.json');
+
+  $php_array = json_decode($json, true);
+
+  // adding Content Type
+  header("Content-type: text/xml");
+
+  $xml = Array2XML::createXML('root-element-here', $php_array);
+
+  echo $xml->saveXML();
No results found